package bean;

import java.util.HashMap;
import java.util.Map;

public class UserDao {
    private static  Map<String, String> user = new HashMap<>();

    static{
        user.put("1001","oyz");
        user.put("1002","zengyi");
        user.put("1003","oyz2");
    }

    public String getUser(String id) {
        return user.get(id);
    }

}
